Home / 789,945.75-1,090,153.18-445,865.45

Finding the Fourth Proportional to 789,945.75, 1,090,153.18 and 445,865.45

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Solution

The fourth proportional to 789,945.75, 1,090,153.18 and 445,865.45 is: 615,310.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,945.75 : 1,090,153.18 = 445,865.45 : x
  2. Step 2: Convert to fraction form
    789,945.75/1,090,153.18 = 445,865.45/x
  3. Step 3: Cross multiply
    789,945.75x = 1,090,153.18 × 445,865.45
  4. Step 4: Simplify right side
    789,945.75x = 486,061,633,276.20
  5. Step 5: Solve for x
    x = 486,061,633,276.20/789,945.75
  6. Step 6: Final answer
    x = 615,310.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.